Ok , I just managed to get the list of the supported languages for now.
Code:
{voiceURI: "Microsoft Hortense Desktop - French", name: "Microsoft Hortense Desktop - French", lang: "fr-FR", localService: true, default: true}
{voiceURI: "Microsoft Zira Desktop - English (United States)", name: "Microsoft Zira Desktop - English (United States)", lang: "en-US", localService: true, default: false}
{voiceURI: "Google Deutsch", name: "Google Deutsch", lang: "de-DE", localService: false, default: false}
{voiceURI: "Google US English", name: "Google US English", lang: "en-US", localService: false, default: false}
{voiceURI: "Google UK English Female", name: "Google UK English Female", lang: "en-GB", localService: false, default: false}
{voiceURI: "Google UK English Male", name: "Google UK English Male", lang: "en-GB", localService: false, default: false}{voiceURI: "Google español", name: "Google español", lang: "es-ES", localService: false, default: false}
{voiceURI: "Google español de Estados Unidos", name: "Google español de Estados Unidos", lang: "es-US", localService: false, default: false}
{voiceURI: "Google français", name: "Google français", lang: "fr-FR", localService: false, default: false}
{voiceURI: "Google हिन्दी", name: "Google हिन्दी", lang: "hi-IN", localService: false, default: false}
{voiceURI: "Google Bahasa Indonesia", name: "Google Bahasa Indonesia", lang: "id-ID", localService: false, default: false}
{voiceURI: "Google italiano", name: "Google italiano", lang: "it-IT", localService: false, default: false}
{voiceURI: "Google 日本語", name: "Google 日本語", lang: "ja-JP", localService: false, default: false}
{voiceURI: "Google 한국의", name: "Google 한국의", lang: "ko-KR", localService: false, default: false}
{voiceURI: "Google Nederlands", name: "Google Nederlands", lang: "nl-NL", localService: false, default: false}
{voiceURI: "Google polski", name: "Google polski", lang: "pl-PL", localService: false, default: false}
{voiceURI: "Google português do Brasil", name: "Google português do Brasil", lang: "pt-BR", localService: false, default: false}
{voiceURI: "Google русский", name: "Google русский", lang: "ru-RU", localService: false, default: false}
{voiceURI: "Google 普通话(中国大陆)", name: "Google 普通话(中国大陆)", lang: "zh-CN", localService: false, default: false}
{voiceURI: "Google 粤語(香港)", name: "Google 粤語(香港)", lang: "zh-HK", localService: false, default: false}
{voiceURI: "Google 國語(臺灣)", name: "Google 國語(臺灣)", lang: "zh-TW", localService: false, default: false}
Swedish is not in the list. My Apologizes.
I remember you asked before your purchase, and I probably got confused with the speech recognition support.